A dust removal device in corrugated paperboard production

Abstract

This invention discloses a dust removal device for corrugated cardboard production, relating to the field of corrugated cardboard production technology. It includes a dust removal cylinder, a filter cylinder, and a water storage tank, all connected sequentially from top to bottom, with interconnected internal cavities, and a pit located on the ground. The dust removal cylinder is funnel-shaped. Dust removal mechanisms are located on the inner sides of the dust removal cylinder and the water storage tank, while a slag collection mechanism is located on the outer side of the dust removal cylinder. A sealing platform is located on the upper inner side of the pit, used to seal the area between the upper openings of the dust removal cylinder and the slag collection mechanism and the upper inner edge of the pit. This dust removal device for corrugated cardboard production quickly adsorbs floating dust in the gas by mixing dust-laden gas with water. Simultaneously, the discharged water-laden gas cools the equipment, avoiding the need for frequent filter maintenance required by direct ventilation and preventing the adhesion of adhesive substances in the high-temperature gas to the filter.

Description

Technical Field

[0001] This invention relates to the field of corrugated cardboard production technology, and in particular to a dust removal device used in corrugated cardboard production. Background Technology

[0002] Corrugated cardboard is a multi-layered adhesive with high mechanical strength and good cushioning performance. It is mainly used in the packaging industry. During the production of corrugated cardboard, fiber, filler, coating and adhesive dust and impurities are generated, which need to be removed.

[0003] Chinese patent document CN203282839U discloses a dust removal device for corrugated cardboard production, including a corrugated cardboard conveyor belt. The conveyor belt is arranged in a horizontal closed pipe parallel to the conveyor belt. Several suction pipes and air blowing pipes are connected to the upper and lower sides of the closed pipe, respectively. A vacuum cleaner is installed on the suction pipe, and a dust collection bag is provided on the vacuum cleaner. An air pump is installed on the air blowing pipe. Several suction pipes are vertically arranged along the length of the closed pipe. The air blowing pipe is located on the paper inlet side of the closed pipe. This utility model keeps the printing surface clean and dust-free, so that when the corrugated cardboard enters the printing roller, ink is applied without obstruction and the ink is absorbed evenly, significantly improving the printing effect of the product. It also fundamentally prevents the phenomenon of white spots on the printing caused by dust, improves dust removal efficiency, and greatly reduces the waste of manpower and material resources.

[0004] The existing technology has the following problems:

[0005] In existing dust removal devices, vacuum cleaners are often used to directly absorb the dust generated during corrugated cardboard production. To expel clean gas, filters are often used. However, this method often causes the filters to become clogged and requires regular cleaning. At the same time, dust that carries away heat may be generated during the production process. This heat is conducted to adhesive dust and impurities, which may cause these impurities to adhere to the filters, making them difficult to clean and maintain. Summary of the Invention

[0006] The main objective of this invention is to provide a dust removal device for corrugated cardboard production, which can effectively solve the problems caused by direct fan extraction, such as filter clogging requiring regular maintenance, and even the adhesion of adhesive dust and impurities.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0008] A dust removal device for corrugated cardboard production includes a dust removal cylinder, a filter cylinder, and a water storage tank, which are fixedly connected together from top to bottom and have interconnected internal cavities, as well as a pit opened on the ground. The dust removal cylinder is located in the pit and is funnel-shaped. A dust removal mechanism is provided on the inner side of the dust removal cylinder and the water storage tank. A slag collection mechanism is provided on the outer side of the dust removal cylinder. A sealing platform is provided on the upper inner side of the pit. The sealing platform is used to seal the area between the upper opening of the dust removal cylinder and the slag collection mechanism and the upper edge of the inner side of the pit.

[0009] Preferably, the dust removal mechanism includes a hydraulically driven lifting frame, a water pump fixedly connected to the middle of the upper side of the lifting frame, a water spray pipe fixedly connected to the water outlet of the water pump, and a rotating pipe sleeved on the outside of the water spray pipe. The lifting frame is located inside the water storage tank. A sliding frame that moves synchronously with the lifting frame is rotatably connected to the bottom of the outer side of the water spray pipe. Several annularly distributed uprights are fixedly connected to the top of the inner cavity of the water storage tank. The outer side of the sliding frame is slidably connected to the side of the uprights that are close to each other. Several annularly distributed force-bearing blades are fixedly connected to the bottom of the inner side of the rotating pipe. A nozzle for spraying water onto the force-bearing blades is fixedly connected to the outer side of the water spray pipe. A stirring frame placed inside the dust removal cylinder is fixedly connected to the outer side of the rotating pipe. When the stirring frame is in the lowest position, its outer contour fits against the inner wall of the dust removal cylinder.

[0010] Preferably, a mixing assembly is fixedly connected to the inner side of the dust collector cylinder. The mixing assembly includes a mixing barrel fixedly connected to the top of the inner side of the dust collector cylinder and several annular air inlet platforms and water distribution platforms that are alternately fixedly connected from top to bottom. The annular air inlet platforms and water distribution platforms are located inside the mixing barrel. Several annularly distributed water outlet pipes are fixedly connected to the outer sides of the several water distribution platforms. The bottom of the lowest water distribution platform is fixedly connected to an inlet pipe that is rotatably connected to the inner side of a rotating pipe. The inlet pipe communicates with the inner cavities of all the water distribution platforms. The inner cavities of the annular air inlet platforms and water distribution platforms on the same layer are indirectly connected to the inner cavities of the water outlet pipes through pipes. The inner cavities of all the annular air inlet platforms are interconnected and a pipe for connecting an air pump is fixedly connected to the uppermost side.

[0011] Preferably, the inner side of each of the several water outlet pipes is fitted with several spiral tubes that are wound together. The inlet end of the spiral tube is fixedly connected to the outlet end of the pipe on the water distribution platform and the annular air intake platform. The number of spiral tubes in each water outlet pipe that connect to the water distribution platform is the same as the number that connect to the annular air intake platform.

[0012] Preferably, a filter assembly is fitted inside the filter barrel. The filter assembly includes a slag-blocking ring, several annularly distributed sliding tubes fixedly connected to the inside of the slag-blocking ring, and a sliding rod fitted inside each sliding tube. The lower end of the sliding rod is fixedly connected to the bottom inside the water storage tank. The lower side of the slag-blocking ring overlaps the inner wall of the dust collector near the lower edge. Several vertically distributed filter plates are fixedly connected to the outside of the sliding tubes, and the filter plates are located inside the filter barrel. A first spring is fitted to the outside of each of the sliding tubes. A first end plate that restricts the two ends of the first spring is fixedly connected to the inside of each of the uprights and the lower end of the sliding tubes.

[0013] Preferably, the filter plate is shaped like a frustum, and a rubber ring is fixedly connected to its outer edge to seal the inner wall of the filter barrel and the filter plate. A cleaning frame driven by a rotating tube is attached to the upper side of several filter plates.

[0014] Preferably, the slag collection mechanism includes several annularly distributed mechanism pipes, a water pipe connecting the mechanism pipes and the inner cavity of the filter bucket, and a filter bucket fitted inside each mechanism pipe. The filter bucket is located below the water pipe. The outer sides of the several mechanism pipes are connected to the inner cavity through annular pipes near the bottom. The bottom of the outer sides of the several mechanism pipes is connected to the bottom of the outer side of the water storage tank by a one-way valve, so that water can only enter the water storage tank from the mechanism pipes in one direction.

[0015] Preferably, the first end plate on the lower side of the slide tube is pushed upward by the lifting frame. When the slag-blocking ring rises to its highest position, all the filter plates except the lowest one move out of the inner side of the filter barrel, and the upper edge of the lowest filter plate is close to the lower edge of the water inlet.

[0016] Preferably, a movable assembly is fitted inside each of the several water pipes. The movable assembly includes a movable rod, two gears located outside the water pipes, and a guide rod that drives the gears to rotate via the movable rod. A piston that blocks the inlet of the water pipe is fixedly connected to the end of the movable rod away from the mechanism tube. A mechanism housing that protects the gears is fixedly connected to the outside of the water pipe. The pistons do not contact the inner wall of the water pipe only when the distance between the pistons is the greatest. Racks that mesh with the gears are embedded on both sides of the movable rod. The lower ends of the two guide rods pass through the upper wall of the water storage tank and are fixedly connected to a second end plate located in the inner cavity of the water storage tank. A second spring is fitted on the outside of each of the two guide rods. The second spring is located between the second end plate and the upper wall of the water storage tank.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This invention provides a dust removal device for corrugated cardboard production, based on a dust removal cylinder; 2. The combination of a filter barrel, a water storage tank, a pit, a dust removal mechanism, a slag collection mechanism, a sealing platform, a first cover, and a second cover allows for the rapid adsorption of floating dust in the gas by mixing dust-laden gas with water. At the same time, the discharged water-laden gas can cool the equipment, avoiding the need for frequent filter maintenance caused by direct ventilation, and also preventing the adhesion of adhesive substances in the high-temperature gas to the filter.

[0019] 2. This invention provides a dust removal device for corrugated cardboard production. Based on the cooperation of a dust removal mechanism, a lifting frame, a water pump, a sliding frame, a rotating pipe, force-bearing blades, a mixing component, a mixing tank, a water inlet pipe, a water distribution platform, an annular air inlet platform, a spiral pipe, a water outlet pipe, a filter component, a slag-blocking ring, and a filter plate, the device quickly filters water containing impurities through the centrifugal force generated by the rotation of the mixing frame and the filtering effect of the filter plate. This avoids the problem of easy clogging of the filter screen caused by using a single filtration method.

[0020] 3. This invention provides a dust removal device for corrugated cardboard production. Based on the cooperation of the filter assembly, the dust-blocking ring, the sliding pipe, the sliding rod, the filter plate, the cleaning frame, the first spring, the mechanism tube, the water pipe, the piston, the moving assembly, the moving rod, the sliding sleeve, the mechanism housing, the gear, the guide rod, the second spring, and the filter residue bucket, the filter assembly works together to simultaneously open the part between the dust collection mechanism and the filter bucket during the upward movement of the filter assembly. This allows the dust collection mechanism to collect the filter residue multiple times, reducing the frequency of equipment maintenance and lowering maintenance costs. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the dust collector cylinder part of the present invention;

[0024] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the dust collector cylinder part of the present invention;

[0025] Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the lifting frame part of the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged structural diagram of part A in the middle;

[0027] Figure 7 For the present invention Figure 5 Enlarged structural diagram of section B in the middle;

[0028] Figure 8 This is a partial cross-sectional three-dimensional structural diagram of the filter component of the present invention;

[0029] Figure 9 This is a partial cross-sectional three-dimensional structural diagram of the slag collection mechanism of the present invention;

[0030] Figure 10 For the present invention Figure 9 Enlarged structural diagram of section C.

[0031] In the diagram: 1. Dust collector cylinder; 2. Filter barrel; 3. Water storage tank; 4. Pit; 5. Dust removal mechanism; 51. Lifting frame; 52. Water pump; 53. Sliding frame; 54. Rotating pipe; 55. Force-bearing blades; 56. Mixing assembly; 561. Mixing barrel; 562. Water inlet pipe; 563. Water distribution platform; 564. Annular air inlet platform; 565. Spiral pipe; 566. Water outlet pipe; 57. Filter assembly; 571. Slag retaining ring; 572. Sliding pipe; 573. Sliding rod 574. Filter plate; 575. Cleaning frame; 576. First spring; 58. Water spray pipe; 59. Stirring frame; 510. Stand; 6. Slag collection mechanism; 61. Mechanism tube; 62. Water pipe; 63. Piston; 64. Moving assembly; 641. Moving rod; 642. Sliding sleeve; 643. Mechanism housing; 644. Gear; 645. Guide rod; 646. Second spring; 65. Filter slag bucket; 7. Sealing platform; 8. First cover; 9. Second cover. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] Example 1, as Figures 1-3 As shown, a dust removal device for corrugated cardboard production includes a dust removal cylinder 1, a filter cylinder 2, and a water storage tank 3, which are fixedly connected together from top to bottom and have interconnected internal cavities, as well as a pit 4 opened on the ground. The dust removal cylinder 1 is located inside the pit 4. The top of the dust removal cylinder 1 can be flush with the ground or slightly higher than the ground. The dust removal cylinder 1 is funnel-shaped.

[0034] The dust collector 1 and the water storage tank 3 are equipped with a dust removal mechanism 5 on their inner sides and a slag collection mechanism 6 on their outer sides. A second cover 9 is detachably installed on the upper side of the mechanism pipe 61. A first cover 8 is detachably installed on the upper side of the dust collector 1. An exhaust pipe is installed on the upper side of the first cover 8. A sealing platform 7 is provided on the upper part of the inner side of the pit 4. The sealing platform 7 is used to seal the area between the upper opening of the dust collector 1 and the slag collection mechanism 6 and the upper edge of the inner side of the pit 4.

[0035] It should be noted that water is injected into the dust collector 1, and after the water and impurity air are mixed and filtered by the dust removal mechanism 5, it is discharged from the upper pipe of the first cover 8. A cooling component can be installed inside the side wall of the dust collector 1 to keep the water in the dust collector 1 at a low temperature. In this way, the air containing water vapor after the water has absorbed the impurities is discharged from the pipe on the first cover 8. This gas can be directly circulated to the corrugated rolls, heating rolls and other components in the corrugated paper production equipment that need to be cooled. This achieves both air dust removal and effective cooling of the equipment.

[0036] Example 2, as Figures 4-8 As shown, the dust removal mechanism 5 includes a hydraulically driven lifting frame 51, a water pump 52 fixedly connected to the middle of the upper side of the lifting frame 51, a water spray pipe 58 fixedly connected to the water outlet of the water pump 52, and a rotating pipe 54 sleeved on the outside of the water spray pipe 58. The rotating pipe 54 is located inside the dust removal cylinder 1, the filter barrel 2, and the water storage tank 3. The bottom of the rotating pipe 54 is rotatably connected to the outer wall of the water spray pipe 58, and a sealing measure is provided. The lifting frame 51 is located inside the water storage tank 3. The bottom of the outer side of the water spray pipe 58 is rotatably connected to a sliding frame 53 that moves synchronously with the lifting frame 51. The sliding frame 53 and the lifting frame 51 are connected by a vertical rod, so that the lifting frame 51 and the sliding frame 53 can move synchronously.

[0037] Several annularly distributed uprights 510 are fixedly connected to the top of the inner cavity of the water storage tank 3. The outer side of the sliding frame 53 is slidably connected to the side of the uprights 510 that is close to each other. The uprights 510 are used to stabilize the movement of the sliding frame 53. Several annularly distributed force-bearing blades 55 are fixedly connected to the bottom inner side of the rotating pipe 54. An expansion section is provided at the bottom outer side of the rotating pipe 54, and the force-bearing blades 55 are located inside the expansion section. This can effectively increase the force-bearing area of ​​the force-bearing blades 55. The spray pipe 5 A nozzle for spraying water onto the stressed blade 55 is fixedly connected to the outside of 8. The nozzle sprays water onto the stressed blade 55, causing the rotating pipe 54 to rotate on the sliding frame 53. A stirring frame 59 placed inside the dust collector 1 is fixedly connected to the outside of the rotating pipe 54. When the stirring frame 59 is in the lowest position, its outer contour is in contact with the inner wall of the dust collector 1. In the initial state, the stirring frame 59 is slightly higher than the lowest position. Since the dust collector 1 is funnel-shaped, the stirring frame 59 will not be in contact with the inner wall of the dust collector 1 at this time.

[0038] It should be noted that the water pump 52 draws water from the water storage tank 3 and sprays it out through the water spray pipe 58. The nozzle on the water spray pipe 58 sprays water onto the force-bearing blade 55, causing the force-bearing blade 55 to drive the rotating pipe 54 to rotate, which in turn drives the stirring frame 59 to rotate. This causes the stirring frame 59 to agitate the water inside the dust collector 1. When the water is agitated, heavier impurities in the water inside the dust collector 1 are thrown towards the inner wall of the dust collector 1 due to centrifugal force.

[0039] Preferably, a mixing assembly 56 is fixedly connected to the inner side of the dust collector 1. The mixing assembly 56 includes a mixing tank 561 fixedly connected to the top of the inner side of the dust collector 1, and several annular air inlet platforms 564 and water distribution platforms 563 that are alternately fixedly connected from top to bottom. The annular air inlet platforms 564 and water distribution platforms 563 are located inside the mixing tank 561. The top of the mixing tank 561 is triangular weir-shaped. Several annularly distributed water outlet pipes 566 are fixedly connected to the outer side of the several water distribution platforms 563. The water outlet pipes 566 of adjacent layers are alternately arranged from a top view angle. The liquid level inside the mixing tank 561 is higher than the liquid level inside the dust collector 1.

[0040] The bottom of the lowest water distribution platform 563 is fixedly connected to an inlet pipe 562 that is rotatably connected to the inside of the rotating pipe 54. Water in the rotating pipe 54 enters the inlet pipe 562 and then enters the water distribution platform 563. The inlet pipe 562 is interconnected with the inner cavity of all the water distribution platforms 563. The inner cavities of the annular air intake platform 564 and the water distribution platform 563 on the same layer are indirectly connected to the inner cavity of the outlet pipe 566 through pipes. The dust-containing gas separated from the annular air intake platform 564 and the water delivered from the water distribution platform 563 are mixed in the outlet pipe 566 and then sent from the outlet pipe 566 to the mixing tank 561. The inner cavities of all the annular air intake platforms 564 are interconnected and a pipe for connecting an air pump is fixedly connected to the top. The air pump can be directly connected to a hose so that its air intake end is close to the position where dust is easily generated.

[0041] Preferably, the inner side of each of the several water outlet pipes 566 is fitted with several spiral tubes 565 that are wound together. The inlet end of the spiral tube 565 is fixedly connected to the outlet end of the pipes on the water distribution platform 563 and the annular air intake platform 564. The spiral tubes 565 are designed so that the gas sent from the annular air intake platform 564 and the liquid sent from the water distribution platform 563 will undergo spiral motion before entering the water outlet pipes 566. After flowing out of the spiral tubes 565, the gas and liquid are mixed together, avoiding the direct spraying of gas, which would make it difficult for the gas and liquid to mix quickly and generate bubbles. This allows the dust to be carried away from the water by the gas again before it is mixed with the water. The number of spiral tubes 565 in each water outlet pipe 566 that connect to the water distribution platform 563 is the same as the number that connect to the annular air intake platform 564.

[0042] Preferably, a filter assembly 57 is fitted inside the filter barrel 2. The filter assembly 57 includes a slag-blocking ring 571, several annularly distributed sliding tubes 572 fixedly connected to the inside of the slag-blocking ring 571, and a sliding rod 573 fitted inside each sliding tube 572. The slag-blocking ring 571 is used to prevent impurities thrown onto the inner wall of the dust collector 1 from continuing to slide down and accumulate on the uppermost filter plate 574, thus affecting the normal operation of the filter plate 574.

[0043] The lower end of the slide rod 573 is fixedly connected to the bottom of the inner side of the water storage tank 3. The lower side of the slag-blocking ring 571 overlaps the inner wall of the dust collector 1 near the lower edge. A rubber pad is provided on the lower side of the slag-blocking ring 571 to fill the gap between the slag-blocking ring 571 and the inner wall of the dust collector 1. Several vertically distributed filter plates 574 are fixedly connected to the outer side of the slide tube 572, and the filter plates 574 are located inside the filter barrel 2. The mesh size of the filter screen on the filter plate 574 gradually increases from top to bottom. A first spring 576 is sleeved on the outer side of several slide tubes 572. The inner side of several uprights 510 and the lower end of the slide tube 572 are fixedly connected to the first end plates that limit the two ends of the first springs 576. There is a certain gap between the first end plate on the slide tube 572 and the lifting frame 51, so that the lifting frame 51 will not push the slide tube 572 when adjusting the gap between the outer contour of the stirring frame 59 and the inner wall of the dust collector 1.

[0044] Preferably, the filter plate 574 is truncated cone in shape, and a rubber ring is fixedly connected to its outer edge to seal the inner wall of the filter barrel 2 and the filter plate 574. A cleaning frame 575 driven by a rotating tube 54 is attached to the upper side of several filter plates 574. The rotating tube 54 drives the cleaning frame 575 to rotate and clean the upper surface of the filter plate 574. A speed reduction assembly is provided between the cleaning frame 575 and the rotating tube 54. The speed reduction assembly can be a planetary gear structure to prevent the cleaning frame 575 from rotating too fast.

[0045] It should be noted that impurities that remain in the water after centrifugation will fall onto the filter plate 574 by gravity. Multiple filter plates 574 perform multi-stage filtration on these impurities. The rotating tube 54 drives the cleaning frame 575 to rotate, pushing the impurities on the filter plate 574 to a position between the horizontal surface of the filter plate 574 and the inner surface of the filter barrel 2.

[0046] Example 3, as Figure 9 and Figure 10 As shown, the slag collection mechanism 6 includes several annularly distributed mechanism tubes 61 and a water pipe 62 connecting the mechanism tubes 61 and the inner cavity of the filter barrel 2. Each mechanism tube 61 is fitted with a filter slag barrel 65. The part of the mechanism tube 61 near the bottom expands, so that the inner surface of the mechanism tube 61 only fits the outer top edge of the filter slag barrel 65, reducing wear. The filter slag barrel 65 is located below the water pipe 62. The outer parts of the several mechanism tubes 61 near the bottom are connected to the inner cavity through the annular pipe. After the water in the dust collector 1 enters the mechanism tubes 61 and fills the mechanism tubes 61 and the annular pipe, the liquid level in the dust collector 1 is higher than the position of the water pipe 62. The outer bottom of the several mechanism tubes 61 is connected to the outer bottom of the water storage tank 3 by a one-way valve, so that water can only enter the water storage tank 3 from the mechanism tubes 61 in one direction.

[0047] Preferably, the first end plate on the lower side of the slide tube 572 is pushed upward by the lifting frame 51. When the slag-blocking ring 571 rises to its highest position, all filter plates 574 except the lowest one move out of the inner side of the filter barrel 2. The upper edge of the lowest filter plate 574 is close to the lower edge of the feed inlet of the water pipe 62. This means that when the slag-blocking ring 571 rises to its highest position, the impurities blocked by the slag-blocking ring 571 and the impurities filtered by the filter plates 574 will fall onto the lowest filter plate 574. Due to the shape of the filter plate 574, all impurities will enter the mechanism tube 61 through the water pipe 62.

[0048] Preferably, a movable assembly 64 is fitted inside each of the several water pipes 62. The movable assembly 64 includes a movable rod 641, two gears 644 located outside the water pipes 62, and a guide rod 645 that drives the gears 644 to rotate by moving them. A sliding sleeve 642 is fitted outside the movable rod 641 to limit the relative distance between the movable rod 641 and the inner wall of the water pipe 62. A spiral groove is provided on the outer side of the guide rod 645 near the upper side. An insertion hole is opened in the middle of the upper side of the gear 644. The guide rod 645 is inserted into the insertion hole. A protrusion is slidably connected in the spiral groove in the insertion hole. As the guide rod 645 moves up and down, it drives the gear 644 to rotate.

[0049] The end of the moving rod 641 away from the mechanism tube 61 is fixedly connected to a piston 63 that blocks the inlet of the water pipe 62. The outer side of the water pipe 62 is fixedly connected to a mechanism housing 643 that protects the gear 644. The mechanism housing 643 is used to prevent water in the water pipe 62 from flowing out of the water pipe 62 due to the presence of the gear 644 and the guide rod 645. The two sides of the moving rod 641 are embedded with racks that mesh with the gear 644. When the guide rod 645 moves up and down to drive the gear 644 to rotate, the gear 644 drives the moving rod 641 to move left and right by means of the rack. The piston 63 does not stick to the inner wall of the water pipe 62 when the distance between the pistons 63 is the farthest. The lower ends of the two guide rods 645 pass through the upper wall of the water storage tank 3 and are fixedly connected to the second end plate located in the inner cavity of the water storage tank 3. The outer side of the two guide rods 645 is fitted with a second spring 646, which is located between the second end plate and the upper wall of the water storage tank 3.

[0050] It should be noted that when the lifting frame 51 moves upward, it pushes the filter plate 574 and the guide rod 645 upward, causing the piston 63 to move away from each other. The filter plate 574 is disengaged from the inside of the filter barrel 2, causing impurities inside the dust collector 1 to enter the filter residue barrel 65 through the water pipe 62. As the lifting frame 51 resets, the water pump 52 continues to pump water, and the water in the mechanism pipe 61 re-enters the water storage tank 3 through the one-way valve at the bottom, so that the liquid level in the dust collector 1 returns to the highest position.

[0051] The working principle of this invention is as follows: First, water is injected into the dust collector 1. After the water and impurity air are mixed and filtered by the dust removal mechanism 5, the mixture is discharged from the upper pipe of the first cover 8. A cooling component can be installed inside the side wall of the dust collector 1 to keep the water in the dust collector 1 at a low temperature. Thus, the air containing water vapor, after the water has adsorbed impurities, is discharged from the pipe on the first cover 8. This gas can be directly supplied to components in the corrugated paper production equipment that require cooling, such as corrugated rolls and heating rolls. By mixing the dust-laden gas with water, the floating dust in the gas is quickly adsorbed. Simultaneously, the discharged water-laden gas can also be used to cool the equipment. To cool the air, a cooling system is used to avoid the need for frequent filter maintenance caused by direct ventilation and to prevent the adhesion of adhesive substances from the high-temperature gas to the filter. Then, water pump 52 draws water from the storage tank 3 and sprays it through the spray pipe 58. The nozzles on the spray pipe 58 spray water onto the force-bearing blades 55, causing the force-bearing blades 55 to drive the rotating pipe 54 to rotate, which in turn drives the stirring frame 59 to rotate. This causes the stirring frame 59 to agitate the water inside the dust collector 1. When the water is agitated, heavier impurities in the water are thrown towards the inner wall of the dust collector 1 due to centrifugal force, and remain after centrifugation. Impurities in the water fall onto the filter plates 574 by gravity. Multiple filter plates 574 perform multi-stage filtration of these impurities. The rotating tube 54 drives the cleaning frame 575 to rotate, pushing the impurities on the filter plates 574 to a position between the horizontal surface of the filter plates 574 and the inner surface of the filter barrel 2. Through the centrifugal force generated by the rotation of the stirring frame 59 and the filtration effect of the filter plates 574, the water containing impurities is quickly filtered, avoiding the problem of easy clogging of the filter screen caused by using a single filtration method. Finally, the lifting frame 51 moves upward, pushing the filter plates 574 and the guide rod 645 upward, causing the piston 63 to move upward. As the filter plates 574 move away from each other, they detach from the inner side of the filter barrel 2, causing impurities inside the dust collector 1 to enter the filter residue barrel 65 through the water pipe 62. As the lifting frame 51 resets, the water pump 52 continues to pump water, and the water in the mechanism pipe 61 re-enters the water storage tank 3 through the one-way valve at the bottom, causing the liquid level in the dust collector 1 to return to the highest position. Through the cooperation of the filter components 57, the part between the slag collection mechanism 6 and the filter barrel 2 is opened simultaneously during the upward movement of the filter components 57, allowing the slag collection mechanism 6 to collect the filter residue multiple times, reducing the frequency of equipment maintenance and lowering maintenance costs.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A dust removal device for corrugated cardboard production, comprising a dust removal cylinder (1), a filter cylinder (2), and a water storage tank (3) connected together from top to bottom, with their internal cavities interconnected, and a pit (4) excavated on the ground, wherein the dust removal cylinder (1) is located in the pit (4) and is funnel-shaped, characterized in that: The dust removal cylinder (1) and the water storage tank (3) are provided with a dust removal mechanism (5) on their inner sides, and a slag collection mechanism (6) is provided on the outer side of the dust removal cylinder (1). A sealing platform (7) is provided on the upper inner side of the pit (4). The sealing platform (7) is used to seal the area between the upper opening of the dust removal cylinder (1) and the slag collection mechanism (6) and the upper inner edge of the pit (4).

2. The dust removal device for corrugated cardboard production according to claim 1, characterized in that: The dust removal mechanism (5) includes a hydraulically driven lifting frame (51), a water pump (52) fixedly connected to the middle of the upper side of the lifting frame (51), a water spray pipe (58) fixedly connected to the water outlet of the water pump (52), and a rotating pipe (54) sleeved on the outside of the water spray pipe (58). The lifting frame (51) is located inside the water storage tank (3). The bottom of the outer side of the water spray pipe (58) is rotatably connected to a sliding frame (53) that moves synchronously with the lifting frame (51). Several annular sub-sections are fixedly connected to the top of the inner cavity of the water storage tank (3). The outer side of the cloth support frame (510) and the sliding frame (53) are slidably connected together with the side of the support frame (510) that is close to each other. Several ring-shaped force-bearing blades (55) are fixedly connected to the bottom of the inner side of the rotating tube (54). A nozzle for spraying water onto the force-bearing blades (55) is fixedly connected to the outer side of the water spray pipe (58). A stirring frame (59) placed inside the dust collector (1) is fixedly connected to the outer side of the rotating tube (54). When the stirring frame (59) is in the lowest position, its outer contour is in contact with the inner wall of the dust collector (1).

3. A dust removal device for corrugated cardboard production according to claim 2, characterized in that: A mixing assembly (56) is fixedly connected to the inner side of the dust collector (1). The mixing assembly (56) includes a mixing tank (561) fixedly connected to the top of the inner side of the dust collector (1) and several annular air inlet platforms (564) and water distribution platforms (563) that are alternately fixedly connected from top to bottom. The annular air inlet platforms (564) and water distribution platforms (563) are located inside the mixing tank (561). Several annularly distributed water outlet pipes are fixedly connected to the outer sides of the several water distribution platforms (563). (566) The bottom of the water distribution platform (563) located at the lowest side is fixedly connected to an inlet pipe (562) that is rotatably connected to the inside of the rotating pipe (54). The inlet pipe (562) is interconnected with the inner cavity of all the water distribution platforms (563). The inner cavities of the annular air intake platform (564) and the water distribution platform (563) on the same layer are indirectly connected to the inner cavity of the outlet pipe (566) through pipes. The inner cavities of all the annular air intake platforms (564) are interconnected and a pipe for connecting an air pump is fixedly connected to the uppermost side.

4. A dust removal device for corrugated cardboard production according to claim 3, characterized in that: The inner side of each of the water outlet pipes (566) is fitted with a number of spiral pipes (565) that are wound together. The feed end of the spiral pipe (565) is fixedly connected to the discharge end of the pipes on the water distribution platform (563) and the annular air intake platform (564). The number of spiral pipes (565) in each water outlet pipe (566) that connect to the water distribution platform (563) is the same as the number that connect to the annular air intake platform (564).

5. A dust removal device for corrugated cardboard production according to claim 2, characterized in that: The filter barrel (2) is fitted with a filter assembly (57) on its inner side. The filter assembly (57) includes a slag-blocking ring (571), several annularly distributed sliding tubes (572) fixedly connected to the inner side of the slag-blocking ring (571), and a sliding rod (573) fitted inside each sliding tube (572). The lower end of the sliding rod (573) is fixedly connected to the inner bottom of the water storage tank (3). The lower side of the slag-blocking ring (571) overlaps the inner wall of the dust collector (1) near the lower edge. Several vertically distributed filter plates (574) are fixedly connected to the outer side of the sliding tubes (572), and the filter plates (574) are located inside the filter barrel (2). A first spring (576) is fitted to the outer side of each of the sliding tubes (572). The inner side of each of the several uprights (510) and the lower end of the sliding tubes (572) are fixedly connected to a first end plate that limits the two ends of the first spring (576).

6. A dust removal device for corrugated cardboard production according to claim 5, characterized in that: The filter plate (574) is shaped like a frustum. A rubber ring is fixedly connected to its outer edge to seal the inner wall of the filter barrel (2) and the filter plate (574). A cleaning frame (575) driven by a rotating tube (54) is attached to the upper side of several filter plates (574).

7. A dust removal device for corrugated cardboard production according to claim 5, characterized in that: The slag collection mechanism (6) includes several annularly distributed mechanism pipes (61), a water pipe (62) connecting the mechanism pipes (61) and the inner cavity of the filter bucket (2), and a filter bucket (65) fitted inside each mechanism pipe (61). The filter bucket (65) is located below the water pipe (62). The inner cavities of several mechanism pipes (61) are connected by annular pipes near the bottom. The bottom of the outer side of several mechanism pipes (61) is connected to the bottom of the outer side of the water storage tank (3) by a one-way valve. Water can only enter the water storage tank (3) from the mechanism pipe (61) in one direction.

8. A dust removal device for corrugated cardboard production according to claim 7, characterized in that: The first end plate on the lower side of the slide tube (572) is pushed upward by the lifting frame (51). When the slag-blocking ring (571) rises to the highest point, the filter plates (574) except the lowest one move out of the inner side of the filter barrel (2). The upper edge of the lowest filter plate (574) is close to the lower edge of the feed inlet of the water pipe (62).

9. A dust removal device for corrugated cardboard production according to claim 7, characterized in that: A movable assembly (64) is fitted inside each of the water pipes (62). The movable assembly (64) includes a movable rod (641), two gears (644) located outside the water pipes (62), and a guide rod (645) that rotates by the movable drive gears (644). A piston (63) that blocks the inlet of the water pipe (62) is fixedly connected to the end of the movable rod (641) away from the mechanism tube (61). A mechanism for protecting the gears (644) is fixedly connected to the outside of the water pipes (62). When the distance between the outer shell (643) and the piston (63) is at its farthest, the piston (63) will not be in contact with the inner wall of the water pipe (62). The moving rod (641) has racks embedded on both sides that mesh with the gear (644). The lower ends of the two guide rods (645) pass through the upper wall of the water tank (3) and are fixedly connected to the second end plate located in the inner cavity of the water tank (3). The outer sides of the two guide rods (645) are each sleeved with a second spring (646). The second spring (646) is located between the second end plate and the upper wall of the water tank (3).

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